Preparation method of zinc-aluminium seamless flux-cored wire

• Main Authors: PAN JIANJUN, ZHONG SUJUAN, LONG WEIMIN, QIAO PEIXIN, YU XINQUAN, HUANG JUNLAN, PEI YINYIN, PAN SHISHI, ZOU WEI
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2011
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention provides a preparation method of a zinc-aluminium seamless flux-cored wire. The method provided by the invention is characterized by comprising the following steps: smelting raw materials such as zinc, aluminium and the like, and casting the melt into an ingot; after riser removal and scalping, putting the ingot into a nitrogen protection furnace and carrying out shpheroidizing annealing in the nitrogen protection furnace at 180-230 DEG C for 1-2 hours; blending a core flux into paste by virtue of an organic solvent and filling the paste in a pressure injector; then putting the zinc-aluminium alloy ingot into a dedicated extrusion die, connecting the die to the pressure injector, and starting the extrusion die to directly extrude welding wire which has the diameter phi of 5.0-12.0mm and has a core of the flux and a sheath of the zinc-aluminium alloy; and then performing drawings many times to obtain the finished product. The flux-cored wire manufactured by the method is characterized in that the